121244412136 has 16 divisors (see below), whose sum is σ = 227336984640. Its totient is φ = 60621216240.

The previous prime is 121244412109. The next prime is 121244412221. The reversal of 121244412136 is 631214442121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121244412098 and 121244412107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822721 + ... + 958831.

It is an arithmetic number, because the mean of its divisors is an integer number (14208561540).

Almost surely, 2^121244412136 is an apocalyptic number.

It is an amenable number.

121244412136 is a deficient number, since it is larger than the sum of its proper divisors (106092572504).

121244412136 is a wasteful number, since it uses less digits than its factorization.

121244412136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247464 (or 247460 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

Adding to 121244412136 its reverse (631214442121), we get a palindrome (752458854257).

The spelling of 121244412136 in words is "one hundred twenty-one billion, two hundred forty-four million, four hundred twelve thousand, one hundred thirty-six".